不过，小脑扁桃体和中脑导水管周围灰质是大脑的两个古老原始的区域，可以追溯到亿万年前。
But the amygdala and the periaqueductal gray are ancient parts of the brain, dating back hundreds of millions of years.
在其他一些情形中，人们也许不能有效控制他们的中脑导水管周围灰质和其他的中脑部区域。
In other cases, people may not be able to keep their periaqueductal gray and other midbrain regions under control.
应用神经束路追踪技术对大鼠孤束核（NTS）和最后区（AP）向中脑导水管周围灰质（PAG）的直接投射进行了观察。
The direct projections from the nucleus tractus solitarius (NTS) and area postrema (AP) to the periaqueductal gray (PAG) were investigated in the rat by using tract-tracing techniques.
应用神经束路追踪技术对大鼠孤束核（NTS）和最后区（AP）向中脑导水管周围灰质（PAG）的直接投射进行了观察。
The direct projections from the nucleus tractus solitarius (NTS) and area postrema (AP) to the periaqueductal gray (PAG) were investigated in the rat by using tract-tracing techniques.
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